2007 CADILLAC XLR coolant level

LEFT DOOR AJAR
This message displays anytime the engine is
running, the transmission is not in PARK (P), and
the driver’s door is open or ajar. A chime
sounds when the vehicle’s speed is greater than
3 mph (5 km/h).
LOW BRAKE FLUID
This message displays if the engine is running to
inform the driver that the brake uid level is
low. Have the brake system serviced by your
dealer as soon as possible. See “Brake Fluid”
underBrakes on page 399.
LOW COOLANT
This message displays when there is a low level
of engine coolant. Have the cooling system
serviced by your dealer as soon as possible. See
Engine Coolant on page 385.
LOW FUEL
This message displays when the fuel supply is
less than 5 gallons (18.9 L) and the display
is turned off. A single chime also sounds when
this message is displayed.
LOW OIL LEVEL
For correct operation of the low oil sensing
system, your vehicle should be on a level surface.
A false LOW OIL LEVEL message may display
if the vehicle is parked on a grade. The oil
level sensing system does not check for actual oil
level if the engine has been off for a short
period of time, and the oil level is never checked
while the engine is running. If the LOW OIL
LEVEL message displays, and your vehicle has
been parked on level ground with the engine off for
at least 30 minutes, the oil level should be
checked by observing the oil dipstick. Prior to
checking the oil level, make sure the engine has
been off for a few minutes and your vehicle is on a
level surface. Then check the dipstick and add
oil if necessary. SeeEngine Oil on page 377.
LOW OIL PRESSURE
If this message displays while the engine is
running, stop the engine and do not operate the
vehicle until the cause of low oil pressure is
corrected. Severe damage to the engine can
result. A multiple chime sounds when this
message is displayed.
210

A. Battery. SeeBattery on page 402.
B. Passenger Compartment Air Filter. See
Passenger Compartment Air Filter on page 184.
C. Underhood Fuse Block. SeeUnderhood
Fuse Block on page 455.
D. Power Steering Fluid. SeePower Steering
Fluid on page 396.
E. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 382.
F. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 377.
G. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 377.
H. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 399.
I. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on
page 388.
J. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 397.Engine Oil
If the LOW OIL LEVEL or LOW OIL PRESSURE
message on the Driver Information Center
(DIC) appears, it means you need to check the
engine oil level right away. For more information,
see LOW OIL LEVEL and LOW OIL PRESSURE
underDIC Warnings and Messages on page 206.
You should check the engine oil level regularly;
this is an added reminder.
Checking Engine Oil
It is a good idea to check the engine oil every time
you get fuel. In order to get an accurate reading,
the oil must be warm and the vehicle must be
on level ground.
The engine oil dipstick handle is a yellow loop.
SeeEngine Compartment Overview on page 374
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil several
minutes to drain back into the oil pan. If you
do not do this, the oil dipstick might not
show the actual level.
2. Pull out the dipstick and clean it with a paper
towel or cloth, then push it back in all the
way. Remove it again, keeping the tip down,
and check the level.
377

Checking Coolant
The engine coolant surge tank is located toward
the rear of the engine compartment on the driver’s
side of the vehicle. For more information on
location, seeEngine Compartment Overview on
page 374.
{CAUTION:
Turning the surge tank pressure cap when
the engine and radiator are hot can allow
steam and scalding liquids to blow out
and burn you badly. Never turn the surge
tank pressure cap — even a little — when
the engine and radiator are hot.
The vehicle must be on a level surface. When
your engine is cold, the coolant level should be at
the FULL COLD mark, located on the side of
the surge tank that faces the front.
If the LOW COOLANT message on the Driver
Information Center (DIC) comes on and stays on,
it means you are low on engine coolant. See
DIC Warnings and Messages on page 206
for more information.
387

Cooling System
When you decide it is safe to lift the hood, here is
what you will see:
A. Electric Engine Cooling Fan
B. Coolant Surge Tank with Pressure Cap{CAUTION:
An electric engine cooling fan under the
hood can start up even when the engine
is not running and can injure you. Keep
hands, clothing, and tools away from any
underhood electric fan.
If the coolant inside the coolant surge tank is
boiling, do not do anything else until it cools down.
The vehicle should be parked on a level surface.
391

A low coolant level should be indicated by a LOW
COOLANT message on the Driver Information
Center (DIC). If it is, you may have a leak at the
pressure cap or in the radiator hoses, heater
hoses, radiator, water pump, or somewhere else
in the cooling system.
{CAUTION:
Heater and radiator hoses, and other
engine parts, can be very hot. Do not
touch them. If you do, you can be burned.
Do not run the engine if there is a leak. If
you run the engine, it could lose all
coolant. That could cause an engine re,
and you could be burned. Get any leak
xed before you drive the vehicle.
If there seems to be no leak, with the engine on,
check to see if the electric engine cooling fan
is running. If the engine is overheating, the
fan should be running. If it is not, your vehicle
needs service.Notice:Engine damage from running your
engine without coolant is not covered by your
warranty. SeeOverheated Engine Protection
Operating Mode on page 390for information on
driving to a safe place in an emergency.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant could require changing sooner, at
30,000 miles (50 000 km) or 24 months,
whichever occurs rst. Any repairs would not
be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your
vehicle.
392

How to Add Coolant to the Coolant
Surge Tank
If you have not found a problem yet, check to see
if coolant is visible in the surge tank. If coolant
is visible but the coolant level is not at the FULL
COLD mark on the front of the coolant surge
tank, add a 50/50 mixture of clean, drinkable water
and DEX-COOL
®coolant at the coolant surge
tank, but be sure the cooling system, including the
coolant surge tank pressure cap, is cool before
you do it. SeeEngine Coolant on page 385
for more information.
If no coolant is visible in the surge tank, add
coolant as follows:
{CAUTION:
Steam and scalding liquids from a hot
cooling system can blow out and burn
you badly. They are under pressure, and if
you turn the coolant surge tank pressure
cap — even a little — they can come out at
high speed. Never turn the cap when the
cooling system, including the coolant
surge tank pressure cap, is hot. Wait for
the cooling system and coolant surge
tank pressure cap to cool if you ever have
to turn the pressure cap.
393

1. You can remove the coolant surge tank
pressure cap when the cooling system,
including the coolant surge tank pressure cap
and upper radiator hose, is no longer hot.
Turn the pressure cap slowly
counterclockwise.
If you hear a hiss, wait for that to stop. A hiss
means there is still some pressure left.
2. Then keep turning the cap and remove it.3. Fill the coolant surge tank with the proper
mixture until the level inside the surge tank
stabilizes at the FULL COLD mark on the front
of the surge tank.
395

4. With the coolant surge tank pressure cap off,
start the engine and let it run until you can
feel the upper radiator hose getting hot. Watch
out for the engine cooling fan.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower,
add more of the proper mixture to the coolant
surge tank until the level stabilizes at the FULL
COLD mark on the coolant surge tank.
5. Then replace the pressure cap. Be sure the
cap is hand-tight and fully seated.If the LOW COOLANT message does not appear
on the Driver Information Center (DIC) after
two minutes, the coolant is at the proper ll level.
If a LOW COOLANT message does appear,
repeat Steps 1 through 3 then reinstall the
pressure cap, or see your dealer.
Power Steering Fluid
SeeEngine
Compartment Overview
on page 374for
reservoir location.
396